A method of producing cellulosic pulp WO 1991006700 A1
1991 (English)Patent (Other (popular science, discussion, etc.))
Mechanical and chemimechanical cellulose pulp, particularly paper pulp, is produced at a low energy input by disintegrating and beating wood material in one or more stages. Acccording to the invention, a substance capable of forming complexes with polyvalent metal ions, particularly calcium ions, so-called complexing agent, is added to the wood material prior to the beating process in order to replace said calcium or other polyvalent metal ions with sodium ions, therewith a further reduction in the energy input is obtained.
Place, publisher, year, edition, pages
ion exchange, complexing agent, mechanical pulping, chemimechanical pulping, low consistency refining, high consistency refiningchanical pulping, chemimechanical pulping, low consistency refining, high consistency refining
Paper, Pulp and Fiber Technology
IdentifiersURN: urn:nbn:se:miun:diva-29426OAI: oai:DiVA.org:miun-29426DiVA: diva2:1051899
SE WO 1991006700 A1 (1991-05-16)